Wireless keyboard



FIG. 1 is a front elevation view of the wireless keyboard thereof;

FIG. 2 is a back elevation view of the wireless keyboard thereof;

FIG. 3 is a bottom view of the wireless keyboard thereof;

FIG. 4 is a top view of the wireless keyboard thereof;

FIG. 5 is a right side view of the wireless keyboard thereof; and,

FIG. 6 is a left side view of the wireless keyboard thereof.

The broken lines are shown in FIG. 2 for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a wireless keyboard, as shown and described. 